6.3-20.5mm 90° Countersink Set HSS-Co 5, 3-Flute, Plastic Case - Ruko GmbH

Combining the HSS‑Co 5 cutting material with a 3‑flute geometry and a standard 90° countersink angle, this six‑piece conical countersink set offers consistent countersinking and extended service life. Order the set directly via Metav Werkzeuge or consult their advisors for technical guidance.

Ruko 6‑piece 90° Conical Countersink Set (DIN 335 C) — HSS‑Co 5, 6.3–20.5 mm

Ruko 6‑piece 90° conical countersink set for precision countersinking and deburring in workshop and industrial metalworking applications

• DIN 335 C standard for precise countersinking
• 3‑flute design for smooth chip evacuation
• 90° countersink angle for standard fasteners
• Impact‑resistant plastic cassette for storage

Consistent results through standardised geometry and design

The set adheres to DIN 335 C, ensuring a reproducible countersink profile across multiple components and jobs. The combination of HSS‑Co 5 cutting material and a 3‑flute geometry produces a smooth chip evacuation and a clean edge transition, which reduces the need for secondary finishing. For production environments where reproducibility is essential, the standard 90° angle provides compatibility with common fasteners and fixtures, while the range 6.3–20.5 mm covers typical countersinking diameters. This reliability translates into fewer rejects and lower rework rates, supporting efficient shopfloor operation.

Material performance and machining advantages

The HSS‑Co 5 composition offers a balance of toughness and wear resistance that is well suited to general metalworking tasks. The three cutting edges promote steady engagement with the workpiece and help to distribute cutting forces, which lessens the risk of chatter and improves surface quality. The geometry is optimised for a deburred finish, reducing time spent on hand finishing. When consistent countersinking depth and finish matter, this conical toolset supports predictable cycle times and tool life, translating into measurable productivity gains for small workshops and industrial users alike.

Practical kit design for workshop organisation

Packed in an impact‑resistant plastic cassette, the set remains protected in transit and on the bench, with individual compartments simplifying tool selection and storage. The compact cassette aids rapid identification of the required diameter and helps to keep the workplace organised, which contributes to shorter setup times. Low‑maintenance handling is supported by straightforward inspection of the cutting edges; regular checking and resharpening when necessary will preserve precision and prolong service intervals. The packaging also reduces accidental damage during routine handling and storage.

For reliable, workshop‑grade countersinking with Ruko quality, contact Metav Werkzeuge for procurement and technical advice at info@metav-werkzeuge.com or by telephone on +49 2822 7131930 — Metav’s advisors can assist with selection and delivery.

Technical Data

• Article number: 4000601499NW
• SKU: 4000601499NW
• Label: Kegelsenkersatz DIN 335C 90Grad 6,3-20,5mm HSS-Co 5 6-tlg.Ku.-Kass.RUKO
• Manufacturer: Ruko GmbH
• Packaging unit: 1
• UID: 4000601499NW

Facts

• Sizes: 6.3–20.5 mm
• Countersink angle: 90°
• Pieces in set: 6
• Cutting edges: 3

Special features

• Standard: DIN 335 C
• Material: HSS‑Co 5
• Packaging: impact‑ and break‑resistant plastic cassette
• 3‑flute geometry for improved chip flow

FAQ

What standards does the Ruko countersink set follow? The Ruko 6‑piece 90° conical countersink set conforms to DIN 335 C, ensuring standardised geometry for reliable countersinking.

Which material is used for the cutting edges and why? The cutters are made of HSS‑Co 5, chosen for its toughness and wear resistance; the Ruko set benefits from this material in terms of durability and consistent finish.

What diameter range is covered by the set? The set covers diameters from 6.3–20.5 mm, providing flexibility for common countersinking tasks.

How is the set supplied and stored? The tools are supplied in an impact‑resistant plastic cassette, which protects the cutters and facilitates organised storage.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com